Bio-REF: Neutron reflectometer for investigation of bio-related thin films
Abstract
A horizontal neutron reflectometer, Bio-REF, which is dedicated to the structural characterization of polymer and biological thin films and multilayers, has been commissioned at the 30 MW HANARO cold neutron reactor in Korea. The Bio-REF is a hybrid of horizontal and vertical scattering geometries, in which the sample is placed horizontally, and the specular reflectivity is mainly measured by the tilt of sample stage and a wide-range translating detector in θ − 2θ mode. While the horizontal sample setup makes the instrument possible to conduct the measurements on a "free-liquid" system as well as mounting sophisticated sample environments, the θ − 2θ operation allows to maintain the incident beam intensity and, together with the wide translational-length of the detector, the instrument is, therefore, capable of reaching a high Q ∼0.5 Å-1.
- Publication:
-
Physica B Condensed Matter
- Pub Date:
- December 2018
- DOI:
- 10.1016/j.physb.2018.08.040
- Bibcode:
- 2018PhyB..551..236C
- Keywords:
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- Neutron reflectivity;
- HANARO;
- Polymer thin films;
- Lipid bilayers